import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo4 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();

        //try(): 自动关闭特性
        try (Connection connection = DBUtil.getConnection();){
            Statement statement = connection.createStatement();
            String sql = "DELETE FROM userinfo WHERE username='"+username+"'";
            int i = statement.executeUpdate(sql);
            if (i>0){
                System.out.println("注销用户成功");
            }else{
                System.out.println("注销用户失败");
            }
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
    }
}







